Piper, C. V., & Beattie, R. K. (1901). The flora of the Palouse region: Containing descriptions of all the spermatophytes and pteridophytes known to grow wild in the area within 35 kilometers of Pullman, Washington. The Washington Agricultural College and School of Science.
Цитирование в стиле Чикаго (17-е изд.)Piper, Charles V., и R. Kent Beattie. The Flora of the Palouse Region: Containing Descriptions of All the Spermatophytes and Pteridophytes Known to Grow Wild in the Area Within 35 Kilometers of Pullman, Washington. Pullman: The Washington Agricultural College and School of Science, 1901.
Цитирование MLA (8-е изд.)Piper, Charles V., и R. Kent Beattie. The Flora of the Palouse Region: Containing Descriptions of All the Spermatophytes and Pteridophytes Known to Grow Wild in the Area Within 35 Kilometers of Pullman, Washington. The Washington Agricultural College and School of Science, 1901.